Question

a body covers first 100km at 50kmph .how fast must it travels next 100km to make an average of 60kmph​

Answer 1

Answer:

Explanation: average v = total s/total t

total s = 100+100=200km

time for first journey = s/v= 100/50= 2hours

time for second journey = 100/v

thus 60 = 200/2 + 100/v

60= 200v/102

6120 = 200v

v=6120/200 thus it will be 31 kmph

hey mate ! please tell if it is correct and if it is

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60v= 19970

v= 19970